This is a brief video demonstrating the COV concept in action.  The drums are spinning to cause a "Bernoulli effect" that is created by two counter-rotating drums.  Oleophilic action causes the oil to adhere to the metal rotating drums until the scraper blades remove the oil from them.  In this patented process, the oil is separated into accompanying tanks for disposal, and possible entry into a fuel recycling system for re-use as a future hydrocarbon feedstock